Dish-washing machine.



W. T. HOOFNAGLE.

DISH WASHING MACHINE.

APPLICATION FILED MA1L25, 1912.

z SHEETS-EHEET 1.

Patented Oct. 29, 1912.

W. T. HOOFNAGLE. DISH WASHING MACHINE. APPLIQATION FILED IAB.25, 1912.

Patented Oct. 29, 1912.

2 BHEET-SSHEET 2.

INVENTOR W 64 k 9 ATTORN UNITED STATES PATENT OFFICE.

WILLIAM T. HOOFNAGLE, OF GLEN RIDGE, NEW JERSEY, ASSIGNOR T0 CHARLES F. FBOTHINGHAM, OF NEW YORK, N. Y.

msn-w'asnme MACHINE.

Specification of Letters Patent.

Patented Oct. 2 9, 1912.

To all whom it may concern: J

Be it known that I, WILLIAM T. Hoor- NAGLE, a citizen of the United States, and. a resident of Glen Rid e, in the county of Essex and State of ew Jersey, have invented certain new .and useful Improvements in Dish-Washing Machines, of which the following is a specification.

The invention relates to machines for washing dishes and thelike; and more par ticularly to a machine employing a suitable tank or tanks containing the washing water and through which the dishes or the like are carried and washed. The carrier is de signed to bring the dish retaining means out of the water during a part of the movement,

whereby the dishes may be conveniently fed,-

rinsed and finally delivered from the machine. 1 A

One of the objects of the invention is to provide a suitable basket to retain dishesof various sizes and shapes, to roperly locate thesame therein, and to e set a positive opening and closing of such dish retaining means. i

A further object of the invention is to provide means for the removal of the dishes from the carrier without shock and to provide suitable bridging means to prevent the dropping of the smaller dishes.

'lhe nature of the invention will best'be understood when described in connection withthe accompanying drawings,in which- Figure 1 is a front elevationof the improved dish washing machine, a portion of the front of the tank and cover being broken away. Fi ,2 is a detail side elevation, partly in section, of a portion of the carrier and two dish retaining means, one of which has delivered a dish to a suitable take-ofi member. Fig. 3 is an enlarged plan of the dish retaining means. Fig. 4 is a longi; tudinal section taken on the line H, Fig. 3.

Similar characters of reference designate corresponding parts throughout the several views.

Referring to the drawings, 10 designates the tank, which is mounted .on a suitable base 11 and contains the washing water fed thereto through a suitable inlet 12, as well as through suitable spra pipes 13, the level of the water in the tan being maintained by an overflow 14. An outlet or clean outpipe 15 is provided in the bottom of the tank and is connected with the overflow pipe 14,, avalve 16 being inserted ahead of the connection.

The tank 10 is provided with an inwardly projecting casing 20, containing a portion of the drivmg mechanism;.and from this casing extend downwardly into the tank two propellers 21 for washing the dishes. These dishes are arraiiged to be brought past the propellers, which direct streams of water toward. the same, by means of a rotatable wheel 22which is mounted about said inwardly projecting casing, and is rotated by suitable driving mechanism, (not, shown). This wheel carries upon its periphery suitable baskets, shown in detail in Figs. 5 and 6. These/baskets consist of a rigid longitudinal frame or dish saddle 30, having end lugs 31 provided with suitable perforations 32 to receive rods 33 of the rotatable wheel 22; and these frames-are strung with wires or othersuitab'le material 34 to provides."

support for a dish. A rigid top or cover frame 35 1s p1voted at one end to an extens1on 36 pro ecting upwardly from a lug 31.

This top 'or cover frame is provided with opposltely disposed wires 37 extending from opposite'ends of the frames. The wires termmate beyond the middle of the frame and their ends are provided with eyes respectively connected to one another by links 38,

whereby. an interlocking flexible cover is provided which will readily adapt itself to the various sizes and shapes of the dishes and at the same time will not open to allow a dish to drop out. Furthermore, each set of the wires is fixed to a corresponding rod 38 loosely mounted in the frame 35, and a spring 38 is arranged to hold the rod and corresponding wires in. a depressed position through the action of the opposite end of said spring on the opposite set of wires, a ortion of the spring being loosely wound a out said rod to increase the elasticity of said spring and its other end being fixed to the frame 35.; The advancing end of the frame 35 is provided, furthermore, with a fixed member 39 having a plurality of curved fingersAO extending inwardly toward the middle of the frame, and with a stop bar 39" to limit the rearward movement of the cover frame. To the other side of the frame 35 is secured 'a bridge .piece 41, the purpose of which will be hereinafter set forth. One side of the frame or cover 35 carries a cam roller 42 and a supplementary cam roller 43,

as well as upper cam surface 44. These baskets are permanently fixed to the rotatable wheel 22 and form, therefore,a polygonal supporting surface for the dishes.

The individual baskets are arranged to be periodically opened, during certain periods of the rotation of the wheel 22, to permit of the insertion of a dish; whereupon, on further rotation of said carrier, 1 the cover closes and firmly holds the dish within the respective basket and during its progress through the water of the washing tank 10.

The opening and closing of frame 35 is effected respectively by an opening cam 50, secured to theitank 10 and adapted to engage said roller 42, and by means of a closing cam 51 forming part of the tank 10 and likewise adapted to engage the said roller 42. An additional closing means is provided in the roller 52 carried by the tank,

I said roller being adapted to engage the top or cam surface 44. This insures the closing of the basket, to hold the dish, before the actual closing cam 51 comes into eifect, whereby sudden closing and consequent shock is obviated, the roller 52 effecting the gradual closing of the basket as it rides upon the inclined surface 44. The supplementary roller 43 then follows under cam 51 and holds the top and cover in closed position at its extreme outer end, thus reduc' .ing friction on rollers 42 and accommodating, also, any'wear. As the dishes, thus held by the baskets with their upper surand through the baskets to washjalso the back of the dishes. Upon leaving the water, the dishes are removed from the rotary carrier by a cam actuated take-off frame which is provided with a plurality of longitudinal slots 61 arranged to permit the passin therethrough of the .fingers {10 of the has ets,"as the same move past the said take-off frame 60.

The member-89 with fingers 40 cooperate mg with the take-off frame 60, and the bridge piece 41 constitutea bridge over which a dish may be-guidedfrom apiece ing dish support to the said take-01f frame when theclamp, coijperatingwith the last named support, 1 is removed therefrom, whereby a smooth 'delivery-of'the dish isinsured. This said frame is oscillated tlhrough intermediate mechanism from V a cam- '62 driven from the driving mechanism of the rotarycarrier 22; and its motion is so timed that it will be in the proper position to receive a dish from a basket, then rise further to deliver the dish to a table 70, remain out of the way of the succeeding basket until it has passed sutficientlyto clear said frame 60, which then drops to its. original position and begins again its upward movement to receive the dish from said latter basket. From the take-ofl' frame 60, the dish slides by gravity upon the table over which it is moved in any suitable manner and delivered therefrom to an inclined trough 7 9 wherein the dishes roll by gravity upon a storing and drying table suitably driven. The cups, bowls or the like are preferably arranged to encounter a diagonal deflecting rod 75, which directs the same into a suitable receiving frame at one side of the table.

' I claim -1. In a dish washing machine: a suitable tank to contain water; a carrier, and means to'move the same through said tank; suitable dish retaining means supported by said carrier; an opening cam, and aclosing cam; and means carried by said dish retainin means adapted to engage said opening an said closing cams to respectively open and close the said dish retaining means.

2. Ina dish washing machine: a suitable tank to contain water; a carrier, and means to move the'same through said tank; dish retaining means including a dish supporting frame, and a cover' plvotally connected thereto; an opening cam,'and a closing cam; and a cam roller carried by said pivoted cover adapted to engage said opening cam and said 'closin cam to respectively open and close the said dish retaining means.

3. In a dish washing machine a suitable tank to contain water; acarrier, and means to move the same through said tank; dish retaining means including a dish supporting frame, and a cover pivotally connected thereto; an opening cam, and closing cam; and a cam roller carried by said pivoted cover at one end thereoffand a {supplementary c'am roller carried by said pivoted cover at the other end thereof, the said cam roller being adapted to' engage the said opening and closing ca-ms and the said supplementary roller the said closing cam.

. 4. In adish washing machine: a suitable tank to contain water; a carrier, and means to move the same through said tank; dish retaining means-including a dish supporting frame, and a cover pivotally connected thereto; an opening cam and a closing cam secured to said tank; a closing roller secured to said tank; and a cam roller carried by said pivoted cover at one end thereof,

and a supplementary. cam roller carried b I said pivotedcover at the other end thereo the said cam roller being adapted to engage inc retaining means.

the said opening and closing cams andthe ementary roller the said closing said sup d the said cover bei cam, an further provided with an upper cam su ace adapted to" by said dish retaining means adapted to encams to gage said opening and said closing sai dish rerespectively open and close the taining means.

6. In a dish washing machine: a suitable tank to contain water; a carrier, and means to move the same through said tank; dish retaining means includin a dish supporting-frame, a rigid frame ivotally connected thereto, and a flexible ish retaining top supported by said rigid frame; an opening cam, and a closing cam; and a cam roller carried b said pivoted frame ada ted to engage sai opening cam and said 0 osin dam to respectively open and close the sai dish 7. Incombination with a suitable carrier; a rigid supportin frame; end lugs extending therefrom an provided with per-.

forations; rods fitting said rforations and suitably connected with sai carrier; atrig'id frame pivotally connected to said support-.

ing frame; and a flexible retaining cover supported by said rigid frame.

8. In a dish washing machine, a carrier, a plurality of dish supports thereon, a dish I clamp for each frame, a bridge support, a slotted take-oi frame,?a brid e advancing en 0' the dish clamp and pro-. vided with fingers adapted to pass throng the slots in the take-off frame wherb a dish may be guided from a preceding ish iece (39) attached to the support to the take-ofi frame when the clamp, coiiperati with the last-named support, is removed t erefrom.

9. In a dish washing machine, a carrler,

.a plurality of dish supports thereon, a dish clamp for each support, a slottedtake-ofi iece (39)'attached to the advancing end 0 the dish clamp and provided with fingers-ada ted to pass throu h the slots in the take-o frame, and a bri e 7 piece '(41) attached to the rear end of t e preceding dish support, whereby a dishmay be dguided over the brid e piece at the rear on of the preceding dis support and over the bridge piece (39) to the said take-off frame when the clamp, cotiperating with the last-named support, is removed therefrom.

10. In a dish washing machine: the combination with a suitable carrier; of dish retaining means movedthereby and comrising a dish supporting frame, rame pivotally connected thereto, a flexible retaining cover supported thereby; means to open and to close, said rigid frame with respect tov the dish'suppo stop bar extending outwar If from the advancing end of the said rigi frame.

Signed at New York, in New York, and State of New York, this 23rd day of March, A. D. 1912.

V WILLIAM T. HOOFNAGLE. Witnesses:

Bonner Warson, Laura E. Surrn.

a rigid frame; and a 

